Oh boy most of those airlines are one and out and I would try hard to avoid ATL. No agreements with AF/LH?.

A tip to Non-Rev to Europe is to depart on a Tue/Wed and come back Tue/Wed/Thur. Oh, and be at an airport where the same airline who's ticket your holding also flies to other states close to where you want to go. You don't want to be at an airport with only one or two flights a day to the states.